Free Email List Cleaner

What this checks

• Format — validates each address against a strict email pattern.
• Disposable domains — flags 60+ known throwaway providers like Mailinator, Guerrilla Mail, and YOPmail.
• Major providers — recognizes Gmail, Outlook, Yahoo, and iCloud as trusted, format-verified addresses.
• Duplicates — removes case-insensitive duplicates, keeping the first occurrence.

Download a cleaned CSV of valid emails, or a full report with a status and reason for every address. Want live SMTP mailbox verification? See our plans.

New to this? Read our full guide on how to clean your email list in 2026.

Cleaning your list improves deliverability — read our email deliverability guide and why emails go to spam.